Possible Clues:

• That's where it has one all on edge
• That has one all on edge
• Reach the team, but not in the midst of it
• At the one that gets three for one score for 21 across
• This has one all on edge
• It's all on edge
• You'd be all on edge here
• 19 down
• Nothing in here
• The in the middle, not in the middle